Finding the Fourth Proportional to 285,361.79, 428,070.99 and 105,494.33
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Solution
The fourth proportional to 285,361.79, 428,070.99 and 105,494.33 is: 158,251.95
Step by Step Solution
- Step 1: Write the proportion equation
285,361.79 : 428,070.99 = 105,494.33 : x - Step 2: Convert to fraction form
285,361.79/428,070.99 = 105,494.33/x - Step 3: Cross multiply
285,361.79x = 428,070.99 × 105,494.33 - Step 4: Simplify right side
285,361.79x = 45,159,060,142.13 - Step 5: Solve for x
x = 45,159,060,142.13/285,361.79 - Step 6: Final answer
x = 158,251.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.